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There is only one eleven-letter word beginning with FEMTOS

FEMTOSECONDfemtosecond n. A unit of time equal to 0.000 000 000 000 001 seconds (i.e. 1×10−15 seconds) and with symbol fs.
FEMTOSECOND n. one quadrillionth part of a second.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 2 words
  • Scrabble in French: no word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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